Moving cylinder with quick-change oil seal structure

Abstract

The motion cylinder with the quick-change oil seal structure comprises a cylinder body and a guide shaft arranged in the cylinder body in a penetrating mode, a guide sleeve used for assisting in supporting the cylinder body is arranged at one end of the cylinder body in the axial direction, a driving mechanism used for driving the guide shaft to move in the axial direction is arranged at the other end of the cylinder body, and the motion cylinder further comprises an end cover and an oil seal which are detachably arranged on the guide sleeve. The oil seal is embedded in the end cover, and the guide shaft extends out of the end cover. According to the technical scheme, the guide sleeve is arranged on the wall plate of the machine frame and used for assisting in supporting of the moving cylinder, the oil seal is directly installed on the end cover, when disassembly is needed, the end cover is directly disassembled from the guide shaft, then the oil seal is taken down from the end cover, the whole moving cylinder does not need to be disassembled, the oil seal has the advantage that the oil seal is convenient to disassemble and assemble, and operation is convenient. The whole motion cylinder is simple in structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to a motion cylinder with quick-change oil seal structure, in particular to a motion cylinder for the guide bar transverse moving mechanism of warp knitting machine. BACKGROUND

[0002] The guide bar transverse moving is one of the actions of the yarn loop movement of the warp knitting machine, and specifically includes the forward movement of the guide bar along the head and tail direction of the warp knitting machine and the return movement, the transverse moving of the guide bar can be realized through the transverse moving mechanism, for example, in the Chinese utility model patent with the authorized announcement number CN202170409U and the name of "few guide bar electronic transverse moving device", a few guide bar electronic transverse moving unit device is disclosed, the device adopts servo motor, controls the rotation of the ball screw rod, drives the accurate transverse moving of the needle front and needle back of the guide bar, wherein the servo motor is connected with the ball screw rod mechanism through the connecting seat and the shaft coupling, the ball screw rod mechanism is connected with the connecting rod through the interference fit, the connecting rod is connected with the end plate through the seat, the guide shaft is fastened with the end plate, and the end plate is connected with the load guide bar assembly through the spring seat, the steel wire rope and the jacking rod respectively.

[0003] The seat is installed on the wallboard, the oil seal is installed in the seat, when the oil seal is damaged or needs to be replaced, the whole driving mechanism needs to be disassembled from the wallboard, then the seat is disassembled, and finally the oil seal is disassembled from the seat, and the oil seal is disassembled and assembled.

[0004] Based on the above problems, the applicant has carried out research, thereby generating the case. UTILITY MODEL CONTENTS

[0005] The utility model is aimed at providing a motion cylinder with convenient oil seal disassembly and assembly.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] The motion cylinder with quick-change oil seal structure comprises a cylinder body and a guide shaft arranged in the cylinder body, one end of the cylinder body along the axial direction is provided with a guide sleeve for assisting the cylinder body to support, the other end is provided with a driving mechanism for driving the guide shaft to move axially, further comprising an end cover and an oil seal which are detachably arranged on the guide sleeve, the oil seal is embedded in the end cover, and the guide shaft extends out of the end cover.

[0008] As a preferred mode of the utility model, the end cover is locked on one end of the guide sleeve along the axial direction through a screw.

[0009] As a preferred mode of the utility model, a groove seat for accommodating the oil seal is arranged on the end cover, and a limiting part for limiting the oil seal from slipping off is arranged on one end of the groove seat close to the guide sleeve.

[0010] As the preferred mode of the utility model, the limiting part is annular, and the inner diameter of the annular part is smaller than the diameter of the groove wall of the groove seat.

[0011] As the preferred mode of the utility model, the inner wall of the guide sleeve is provided with a positioning table, and the limiting part abuts on the positioning table.

[0012] As the preferred mode of the utility model, the limiting part is provided with an annular groove, and a sealing ring is arranged in the annular groove and is arranged between the limiting part and the inner wall of the guide sleeve.

[0013] As the preferred mode of the utility model, the inner wall of the guide sleeve is provided with a copper sleeve, and the guide shaft is arranged in the copper sleeve.

[0014] As the preferred mode of the utility model, one end of the copper sleeve is abutted on the limiting table along the axial direction, and the other end is limited by the snap ring arranged on the inner wall of the guide sleeve.

[0015] As the preferred mode of the utility model, the driving mechanism comprises a motor, a lead screw and a lead screw nut, the lead screw is connected with the output shaft of the motor, the lead screw nut is sleeved on the lead screw, and the lead screw nut is fixedly connected with the guide shaft.

[0016] As the preferred mode of the utility model, the guide shaft is provided with an axial shaft hole, the lead screw nut is arranged in the shaft hole, the lead screw is arranged in the shaft hole, and a guide part for limiting the rotation of the guide shaft is arranged in the cylinder body.

[0017] The technical scheme of the utility model has the advantages that the guide sleeve is arranged on the wall plate of the rack and is used for assisting the support of the motion cylinder, the oil seal is directly arranged on the end cover, when the oil seal needs to be disassembled, the end cover is directly disassembled from the guide shaft, and then the oil seal is taken off from the end cover, the entire motion cylinder does not need to be disassembled, the oil seal is convenient to disassemble, and the entire motion cylinder structure is simple. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 The utility model discloses a structure schematic diagram.

[0019] Fig. 2 The utility model discloses a structure schematic diagram of cooperation frame.

[0020] In the drawing:

[0021] Cylinder body 10 Guide sleeve 11

[0022] Positioning table 12 Copper sleeve 13

[0023] Snap ring 14 Guide shaft 20

[0024] Shaft hole 21

[0025] End cover 30 Groove seat 31

[0026] limiting portion 32 annular groove 33

[0027] sealing ring 34 oil seal 40

[0028] screw 50 motor 60

[0029] screw nut 61 lead screw 62

[0030] frame 70 wall plate 71 DETAILED DESCRIPTION

[0031] In order to better understand the technical scheme of the utility model, the following will be more detailed in conjunction with examples.

[0032] Reference Figs. 1-2 , the motion cylinder with quick change oil seal structure, including cylinder body 10 and the guide shaft 20 who is worn in the cylinder body 10, the cylinder body 10 and the guide shaft 20 coaxial arrangement, the cylinder body 10 along the one end of axial is equipped with the guide sleeve 11 for assisting the cylinder body 10 support, the other end is equipped with the drive mechanism for driving the guide shaft 20 axial movement, in the utility model, still including detachably being arranged on the guide sleeve 11 end cap 30 and oil seal 40, oil seal 40 is embedded in end cap 30, the guide shaft 20 from end cap 30 stretches out. The utility model in installation, the guide sleeve 11 is erected on the wall plate 71 of frame 70, specifically sets up mounting hole on the wall plate 71, the guide sleeve 11 is worn in mounting hole, end cap 30 is located on the wall plate 71 outside, to facilitate dismounting.

[0033] As the preferred mode of the utility model, the end cap 30 is locked in the one end of the guide sleeve 11 along the axial direction by the screw 50. The setting direction of screw 50 is the axial direction of cylinder body 10, in the embodiment, four screws 50 are evenly arranged along the circumference of end cap 30.

[0034] As the preferred mode of the utility model, the end cap 30 is provided with the groove seat 31 for accommodating the oil seal 40, and the limiting portion 32 for limiting the oil seal 40 from slipping off is arranged on the one end of the groove seat 31 close to the guide sleeve 11. As the preferred mode of the utility model, the limiting portion 32 is annular, and the inner diameter of the annular is smaller than the diameter of the groove wall of the groove seat 31. When assembling, the oil seal 40 is made to enter the groove seat 31 from the limiting portion 32 by elastic extrusion, and after entering the groove seat 31, the oil seal 40 is expanded and abuts against in the groove seat 31.

[0035] As the preferred mode of the utility model, the inner wall of the guide sleeve 11 is provided with the positioning table 12, and the limiting portion 32 abuts against the positioning table 12, so that the end cap 30 is more accurately assembled on the guide sleeve 11.

[0036] As the preferred mode of the utility model, the limiting part 32 is equipped with annular groove, annular groove is equipped with sealing ring 34, sealing ring 34 is set between the limiting part and the inner wall of the guide sleeve 11.

[0037] As the preferred mode of the utility model, the inner wall of the guide sleeve 11 is equipped with copper bushing 13, the guide shaft 20 is threaded in copper bushing 13, and lubricating oil is added in copper bushing 13 to make the guide shaft 20 move more smoothly in copper bushing 13.

[0038] As the preferred mode of the utility model, the copper bushing 13 abuts on the limiting platform 12 at one end along the axial direction, and the other end is limited by the snap ring 14 set on the inner wall of the guide sleeve 11.

[0039] As the preferred mode of the utility model, the driving mechanism includes motor 60, lead screw 62 and lead screw nut 61, the lead screw 62 is connected with the output shaft of motor 60, specifically connected with the lead screw 62 through the shaft coupling, used for driving the lead screw 62 to rotate, the lead screw nut 61 is fitted on the lead screw 62, the lead screw nut 61 is fixedly connected with the guide shaft 20, the lead screw 62 is driven to rotate by the motor 60, and the lead screw nut 61 moves axially on the lead screw 62 in the process of rotating the lead screw 62, so as to drive the guide shaft 20 to move axially in the cylinder body 10.

[0040] As the preferred mode of the utility model, the guide shaft 20 is provided with an axial shaft hole, the lead screw nut 61 is installed in the shaft hole, specifically can be locked on the guide shaft 20 through screw 50, the lead screw 62 is arranged in the shaft hole 21, the cylinder body 10 is provided with a guide part limiting the rotation of the guide shaft 20, and the guide shaft 20 can only move axially and cannot rotate circumferentially through the guide part.

[0041] The protection scope of the utility model is not limited in the embodiment, and any similar transformation thereof is regarded as not departing from the protection scope of the utility model.

Claims

1. A sport cylinder with quick-change oil seal structure, comprising a cylinder body and a guide shaft arranged in the cylinder body, the cylinder body is provided with a guide sleeve at one end along the axial direction for assisting the cylinder body to support, and the other end is provided with a driving mechanism for driving the guide shaft to move axially, characterized in that: The end cover is detachably arranged on the guide sleeve, and the oil seal is embedded in the end cover, and the guide shaft extends from the end cover.

2. The motion cylinder having a quick change oil seal structure according to claim 1, characterized by: The end cover is locked on the guide sleeve by a screw.

3. The exercise cylinder having a quick change oil seal structure as claimed in claim 1, wherein: The end cover is provided with a groove seat for accommodating the oil seal, and the groove seat is provided with a limiting portion near one end of the guide sleeve for limiting the oil seal from slipping off.

4. The exercise cylinder having a quick change oil seal structure as claimed in claim 3, wherein: The limiting portion is annular, and the inner diameter of the annular limiting portion is smaller than the diameter of the groove wall of the groove seat.

5. The exercise cylinder having a quick change oil seal structure as claimed in claim 4, wherein: The inner wall of the guide sleeve is provided with a positioning table, and the limiting portion abuts against the positioning table.

6. The exercise cylinder having a quick change oil seal structure as claimed in claim 5, wherein: The limiting portion is provided with an annular groove, and a sealing ring is arranged in the annular groove and between the limiting portion and the inner wall of the guide sleeve.

7. The exercise cylinder having a quick change oil seal structure as claimed in claim 6, wherein: The inner wall of the guide sleeve is provided with a copper sleeve, and the guide shaft is arranged in the copper sleeve.

8. The exercise cylinder having a quick change oil seal structure as claimed in claim 7, wherein: The copper sleeve abuts against the positioning table at one end in the axial direction, and the other end is limited by a snap ring arranged on the inner wall of the guide sleeve.

9. The exercise cylinder having a quick change oil seal structure as claimed in claim 1, wherein: The driving mechanism comprises a motor, a lead screw and a lead screw nut, the lead screw is connected with the output shaft of the motor, the lead screw nut is sleeved on the lead screw, and the lead screw nut is fixedly connected with the guide shaft.

10. The exercise cylinder having a quick change oil seal structure as claimed in claim 9, wherein: The guide shaft is provided with an axial shaft hole, the lead screw nut is arranged in the shaft hole, the lead screw is arranged in the shaft hole, and the cylinder is provided with a guide portion for limiting the rotation of the guide shaft.

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